Telephone signaling apparatus.



D. D. WRIGHT.

TELEPHONE SIGNALING APPARATUS. APPLICATION FILED Nov. 27, 1912.

Patented Aug. 25, 1914.

2 SHEETS-SHEET 1.

@yf/.y Lgm D. D'. WRIGHT. TELEPHONE SIGNALING APPARATUS. APPLICATIONFILED NOV. B7, 1912.

A, A O8, 305, Patented Aug. 25, 1914 2 SHEET-SHEET 2.

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llange 21 and carrying" stop rollers DUDL-EY D. WRIGHT, F SAN FRANCISCO,UALIFORNIA.

TELEPHNE SGrNALINGl APPARATUS'.

i., ios,sos.

Specification of Lettera ltatent.

Patented Aug", 25, 1914.

Application nea November a7, una. serial No. raamt.

To all' 'wilma it may concern:

Be it linown that l, Donner D. Wnion'i, a citizen of the United States,residing at San Francisco, in the county of San Francisco and State ofCalifornia, have invented a new and useful Telephone SignalingApparatus, ot which the following is a specification.,

'llhe object of my invention is to produce an apparatus which may beinstalledin corrv junction with a subscriberstelephone, and

"which .,pupon proper setting, and upon the sending in of a call to theassociated telephone, will operate automatically to advise lthe callingsubscriber or the central Iopcrater in accordance with a predeterminedcode signal. There may be any desired number ot signals in the code, anda subscriber, as when leaving his home orl office, may set the device togive any desired. or suitable one of these signals.

'lhe accompanyingdrawings illustrate my invention.

Figure 1 is an axial section through my apparatus, substantially on theline 1--1 ot Fig. 5.; Fig. 2 is a section on the line 2-2 ot Fig.v l;Fig. 3 is a partial view similar to part ot Fig. 2, but showing theroller 23 in adili'erent position; Fig. l is a iront ele- `ration ot thedevice shown in Fig. l; Fig. 5 is a section on the line 5--5 of Fig. l,and

`.also shows the electrical connections diagrammatically, Fig. 6 is aperspective vview showing one of the adjustable segments; and Figs.v 78, and 9 are diagrammatic views showing the setting ot the switches tordifferent types of telephone systems and the setting ot the segments fordiderent signals.

A suitable motor 10, conveniently a spring motor provided with agovernor 1l' and a winding stem 12., tends to drive a shaft 13, on oneend of which is mounted anarm 14 carrying an inwardly projecting contactfinger 15 which, when the shaft 13 rotates,

sweeps around a commutator 16 in a groove 17 in the circumferencethereot. 'Fhe shalt annular 22 and 23 on the outside and inside ot suchflange. The roller 23 is slightly angularly spaced trom the roller 22,and may be placed either angularly behind (as indicated in 2) orangularly ahead (as indicated in Fig. 3) ot the roller 22 to suitdifferent telephone systems as hereinafter explained. A slotted dog 24,the slot in which 13 carries a stop dislr 20 having an to allow thepassagev ot the llange 2l and one or the other but not both of therollers 22 and 23, is -slidably mounted in a standard 25, convenientlybeing provided with a guide fork 24 straddling the shaft 13; and

is connected, by a pin and slot connection '26, to the core 27 of asolenoid 28. The pin and slotl connection 26 allows the core 27 tooperate the dog 2l by a hammer blow, .so thatsticking is efi'ectuallyprevented.

The commutator 16 has a body of'insulation material, and is suitablysupported, as on 'a standard 30. A shaft 31, in alinement with` theshaft 13 but insulated therefrom, extends axially through the oommutator 16, conveniently being supported in the standard 30; andsurrounding such shaft 31, but not extending through the commutator 16,is a sleeve 32. Un the inner ends of the shaft 31 and sleeve 32 areAmounted'contact segments 33 and 34: respectively, of the shape shown inperspective in Fig.v6. These contact segments are conveniently slottedto form individual contact lingers 33 and 3l' at their periphery, whichfingers bear.

against the exposed ends ot two circular series of: pins 35 and 36 uponpro r movement .olf the segments 33 and 34 y setting handles 37 and 38on the outer or front ends of the shaft 31 and the sleeve 32. A suitabledial may beimounted on the-front of the standard 30 to give indicationof the number of pins 35 or 36 with which the segments 33 and 3d arerespectively in en agement, and it desired oney or more o? the lingers33 or 3d may be provided with a notch or recess fl() (Fig. 6) to enablethe operatorVI to eel,when the segments 33 or 34 are in a properposition.

The pins 35 and 36 project into the body of the commutator 16 fromopposite sides, and are exposed in the bottom of the groove V17 so thatthey will be engaged by the contact 15 as the latter sweeps around thecommutator. A plate ll is embedded in the bottom ot the slot 17 inposition to be engaged by the contact Enger l5 when the latter is innormal position, and a pin Ll2 is embedded in the same face ot the commutator' 16 as are the pins 35, but is engaged by the segment 33 only whenthe latter is not in engagement with any of Suitable binding posts 43,44, 45, 46, and 47 are respectively connected to the shaft 13 or itssupporting standards, the shaft 31V is Wide enough.

and sleeve" 32 or their supporting standard the pins 35.

I in 30, that one ofl the pins 35 which is nearest the plate 41, and thepin 42. l

A triple pole switch 51 and a double pole switch 52 are provided forconnecting the apparatus for different types of telephone Systems. Whena number of the devices are to be used for a number of similartelephones, the switches` 51 and 52 lmay be omitted and the permanentconnections made to suit the installation. The three arms 53, 54, and 55`of theswitch*v 51 co- The contact 15 is connected throughthe arm 14,the shaft 13, the spring motor standard, and the binding post 43 to theswitch arm 54; the segments 433 and 34 are connected through the shaft31 and sleeve 32, the standard 30, and the binding post 44 to the switchbutton 63, and also to one side AV of the telephone transmission line;the first pin .35 is connected through the binding post 45 to the'switch arm 53; the cony tact plate 41 is connected through the bindingpost 46 to theswitch button 56; the pin 42 is connected through thebinding post 47 to the switch button 62; the solenoid 28 is connectedbetween the switch buttons 57 and 59; a condenser 66 is connectedbetween the switch arm 55 and the switch button 59; an

inductance 67 has one terminal connected to the switch button 58 andthebther to both switch arms 55 and 61; the switch arm 60 and the switchbutton 64 are connected together and to one side of the polarized bellor telephone ringer 68, the other side of Y which issuitably connectedto the telephone apparatus; the telephone apparatus is suitablyconnected between the two wires A and B of the telephone transmissionsystem; and the wire B is connected to the switch button 65.

By diii'erent settings of the-two switches 51 and 52, the device may beconnected in several di'erent ways, 'to suit the different lsystems oftelephone connections in general use. B .setting both switches 51 and'52 down, t e set o connections shown in Fig. 7, suitable for commonbattery systems where alternating current is used for ringing purposes,but where direct current is used for telephoning and other signalpurposes, is obtained. By setting both switches 51 and 52 up, the set ofconnections shown .in Fig. 8,'suitable for local battery systems wherealternating current is used for all signaling and that by which thesubscriber calls up is produced bv a hand operated magneto, is obtained.y setting'switch' 51 up and switch 52 down, the set of connections shownin Fig. 9, suitable for the same system as that shown in Fig. 8 isobtained. The diierencebetween the systems in Figs. 8 and 8 is that inFig. 8 my signaling device is connected in series withthe polarized bell68 while in Fig. 9 it isv connected in shunt thereto.

In the system shown in'Fig. 7, the roller 23 isangularly behind theroller 22, as shown in Fig. 2, and the roller 22 normally bears againstthe dog 24. The subscriber is called by yalternating current cominginoverl .the wire A, passing through the switch button 63 andswitch arm 60to the polarized bell 68, and thence through the usual condenser 70 tothe other side B of the transmission line. Assume that prior to thiscall the subscriberhas set his automatic signaling device to give adesired code signal, say 2 1; lwhich is done by turning .the handle, 37counter clockwise (as seen in Fig. 4) to move the se ent 33 counterclockwise (as seen in Fig. 5) to enga e the first two of the pins 35,and the hand e 38 clockwise (as seen in Fig. 4) to move the segment 34clockwise (as seen in Fig. 5) to engage the first one of the pins 36.The ringing current from the central otiice then, in. addition toringing the bell 68 as above described, alsowpasses, in shunt to thecircuit above traced, freniy the wire A through the shaft 31, segment33, the first pin 35, switch 'arm 53, switch button 57, solenoid 28,

condenser 66, switch arm 61, and switch but-l ton l65 to the wire B. Theresultant energization of the solenoid 28 lifts the core 27 and dog 24to permit the roller 22 to pass through the slot in such dog; as aresult, the spring motor 10 drives the shaft 13 s`li htly forward, orcounter clockwise (as seen in Fig.' 2), until .the roller 23 strikes thedog 24. When the ringing current ceases, the solenoid 28is denergizedand the dog 24 drops, thereby allowing the roller 23 to tact finger 15successively engages the severall contact pins 35 and then the severalcontact pins 36. As it engages any of such pins which is also engaged bythe segment 33 or 34, a circuit is completed from the wire A through theshaft 31, segment 33 or 34,/pi11 35 or 36, contact finger 15, arm 14,switch arm 54, switch button 58, inductance 67, switch arm 61, andswitch button 65 to the wire B, thereby allowing a directeurrent impulseto ass to 'vea suitable si nal, as a flash -o a signa lamp-or a tapinlio vmade only tor use with t unconnected pins 35and 36, Vone dash ortap as such n er passes the pin' 36 which is engaged by t e segment 8l..'lhe condenser 66 prevents these direct currentimpulses l'rom passingthrough the solenoid 28 to energize it, and the indnctance 6 7 preventsthe pas-v sage ol the high frequency voice currents through theautomatic signaling device. en the automatic sinaling' device is issystem ol connection, the contact plate ll Vand the pin 42 may beomited; as may also the switches 5l and 52 ilthe switch connectionsshown in lfig. 'l are made permanently.

ln the systems shown in Figs. 8 and 6, the roller 23 is placed angularlyahead ol the roller 22, as shown in llig. 8, and the roller 22,- asbetere, normally bears against the dog 2l. ln the system shown in Fig.8, the ringingr current trom the central station, coming in through theWire A, passes to the shaft 3l and segment 38., li the device is not set-for automatic signaling, the current then passes through the pin l2,switch hutten 68, an switch arm to the polarized bell 68, and

thence tothe line B. lt the device is set lor' automatic signaling, therin current passes from the segment 33 through the rst pin 85, switcharm 53, switch button 56, plate il, contact finger l5,arm ll, switch arm5d, svvitch button 57, solenoid 28, switch button 58, switch arm 55,switch arm 6l, and switch hutten 6l to the polarized bell 68, and thenceto the line B as before. .This energize; thev solenoid 28 so that thecore 2l' lilts the dog 2d to allow the passage ol the roller 22,whereupon the spring motor 16 drives the arm ll and contact nger l5around the commutator 16 until the roller '23 engages the dog 24e,breaking the ringing current as the contact nger l5 leavesthe plate dlandv producing a malte and brealr ol the ringing current as each pin35and 36 engaged by the segment 88-. and 8l is passed by the contacthnpger l5. flhis matting and b realring ol the circuit produces dashesol the signal light or taps in the telephone receiver oi the centraloperator, the nu ber ot dashes or `taps depending upon tlleettinpg olthe segments 33 and 8l, or indicating 8--2 with the settingl ol the Asegments shown in llig. 8. 'lhe rotation oi the shalt i3 stops when theroller 23 strikes the doodt; and thereafter, when the incoming currentis stopped, the

' solenoid 28is denergized and the dog 8l drops 'to allow the massacreol the roller 88., and the stoppage of the roller 22 in normal position.When the automatic signaling de vice is made only lor use with thissystem ot connection, thecondenser 66 and the inductance 67 may beomitted; as may also the switches 5l and 52 il the switch connectionsshown in liig. 8 are made permanently.

ln the system shown in Fig. il the ringing current coming' in. over theline .ll primes through the switch button 63 and the switch 66 to thepolarized bell 68, and thence to the line B. ll shuntcarrent also passesfrom the line to the shaft 3l, and thence, ifthe device is set forautomatic signaling, through the segment 33, the hrst pin 85, switch arm58, switch button 56, plate lll, contact linger l5., arm ll, switch arm54, switch button 57, solenoid 28, switch button 59, switch arm 55,switch arm 6l, and switch button 65 to the line B. This shunt currentencrgizes the solenoid 28, and the resultant tilting of the dogr Qdallows the spring motor `lll to drive the hnger l5 around thecommutator' i6, and the changes in current llow upon the making andbreaking of the shunt circuit produced by the engagement anddisengagement of thc linger l5 with which those pins 35 and 86 'whichare in contact with the segments 33 and 3d produce hashes or taps orother sig nals as betere, giving the code signal 53 with the segments 33and 3l set as shown in ling.. 8. When the automatic signaling device ismade only tor'use with this system shown in Fig. 6, the condenser 66,the inductance 67, and the pin l2 may be omitted; as may also theswitches 5l and 52 it the switch connections shown in Fig. 9 are madepermanently;

l claim as my invention:

l. du automatic telephone signaling apparatus flor producing' a codesignal, comprising a series ol contacts, a contact nger movable oversaid contacts iii-cyclic succes sion, a spring; motor tor producir .suchmovement, means lor varying the e ective arrangement ol said contacts,and means controlled by an incoming calling current t-o the associatedtelephone tor causing the movement ol said contact linger over saidcontacts by said springe' motor and for necessarily stoppino' said.movement at the end oit a complete'v cycle until another incomingcallins current separate trom the first shall be supplied subsequent tothe completion ot such cycle.`

dn automatic telephone signaling apparatus tor producing a code signal,com pricing a series ol contacts, a contact linger movable over saidcontacts in cyclic succes sion, means lor varying the effective arrangement ol said contacts, and means controlled by an incoming callingcurrent tothe associated telephone lor causing the movement ot saidcontact linger over said contacts lor a complete cycle and lornecessarily stopping such movement at the end ol such cycle untilanother incoming; callingn current separate ytroni the first shall besup- Bil plied subsequent to the completion of such cycle.

il. An automatic telephone signaling apparatus for producing a codesignal, comprising a series of contacts, a contact finger movable oversaid contacts in cyclic succession, a spring motor for producing suchmovement, and means controlled by an incoming callingcurrent to theassociated telephone for causing the movement of said contact fingerover said contacts by said spring motor and ltoi' necessarily stoppingsaid' finger and for necessarily stopping said movement. at the end of acomplete cycle until another incoming calling current separate from thefirst shall be supplied subsequent to the completion of such cycle.

5. An automatic telephone .signaling apparatus for producing a codesignal, comprising a device for automatically making and breaking avcircuit'in a plurality of time-separated groups of makes and breaks,means for setting such device to vary the number of makes and breaksproduced in the several groups in an operation, and means controlled byan incoming calling current to the associated telephone for starting theoperation of said circuit making and breaking means and for causing suchoperation necessarily to stop upon the completion of the last of thegroups of makes and breaks until another incoming calling currentseparate from the first shall be supplied 'subsequent to suchcompletion.

6. An automatic telephone signaling apparatus for producing a codesignal, comprising a series of contacts, a contact finger arranged tosweep over" said contacts, `a spring motor for driving said contactfinger over said contacts, said contacts and said contact fingers beingconnected so that the passage of the contact finger over the contactsproduces a series of impulses in a circuit, means for changing theconnection of said contacts to vary the signal produced, and meansresponsive to an incoming calling current to the associated telephonefor causing said contact. linger to be moved over said contacts by saidmotor and necessarily to stop after making a complete cycle of movementover said contacts until another 'ncoming calling current separate fromthe first shall be supplied subsequent to the completion of such cycle.

rfinger over the contacts produces a series of impulses in a circuit,means for changing the connection of said contacts to vary the signalproduced, and means responsive to an incoming calling current to theassociated telephone for causing said Contact finger to be moved oversaid contacts and necessarily to stop after making a complete cycle ofmovement over said contacts until another incoming calling currentseparate from the first shall be supplied subsequent to the completionof such cycle.

8. An automatic telephone signaling apparatus for producing a codesignal, comprising a series of contacts, a Contact finger arranged tosweep over said contacts, Va spring motor for drivin said contact fingerover said contacts, sai contactsand said contact ngerbeing connected sothat the passage of the contact finger over the contacts produces aseries of impulses in a circuit, and means responsive to an incomingcalling current to the associated telephone for causing said contactfinger to be moved over said contacts by said motor and necessarily tostop after making a complete cycle of movement over said contacts untilanother incoming calling current separate fromV the first shall besupplied subsequent to the com- 100 pletion of such cycle.

9. An automatictelephone signaling apparatus for producingra codesignal, comprising a series of contacts, a contact finger arrangedtosweep over said contacts, said 105 contacts and said contact fingerbeing connected so that the passage of the contact finger over thecontacts produces a series of impulses in a circuit, and meansresponsive to anincoming calling current to the associated telephone forcausing said contact finger to be moved over said contacts andnecessarily to stop after makinga complete cycle of movement over saidcontacts until another incoming calling current separate from the firstshall be supplied subsequent to the completion of such cycle.

10. An automatic telephone signaling apparatus for producing a codesignal, comprising a series of contacts, a contact finger arranged tosweep over said contacts, a spring motor for driving saidcontact fingerover said contacts, said contacts and said contact linger beingconnected so that the passage of the contact finger over the contactsproduces a series of impulses in a circuit, means for changing theconnections of said contacts to vary the signal produced, stopping meanswhich in one position permits a partial movement of said Contact andbreaking a circuit. and means controlled b v an incoming calling currentto the assoA ciated telephone for starting the operation of said circuitmaking and breaking means and for positively stopping such operationafter a c vcle of operation regardless of the length of time theincoming calling current continues.

18. An automatic telephone signaling apparatus for producing a codesignal. comprising two relatively movable members which move relativelyto each other in a complete cycle having two parts and during one partonly of such relative movement produce an automatic making and breakingof a circuit. and means controlled by an incoming calling current to theassociated telephone for causing one part of such relative movement andby the cessation of said incoming calling current for lausing the otherpart of such relative movement.

19. An automatic telephone signaling apparatus for producing a codesignal. comprising two relatively movable members which move relativelyto each other in a complete cycle having two parts and during suchrelative movement produce an automatic making and breaking of a circuit,and means controlled by an incoming calling current to the associatedtelephone for causing one part of such relative movement and by thecessation of said incoming calling current for causing the other part ofsuch relative movement.

Q0. An automatic telephone signaling apparatus for producing a codesignal, comprising means controlled by an incoming calling current tothe associated telephone, and a device controlled by said means toautomatically make and break a circuit which is supplied from a distantsource and includes wires over which the said calling current issupplied.

Q1. ln combination, a telephone`v a circuit leading from a distance tosaid telephone, means controlled by an incoming calling current to saidtelephone over said circuit, and a device controlled by said means forautomatically starting and stopping the fioiv of current over saidcircuit from a distant source.

22. ln combination. a contact finger. a series of contacts, said contactfinger and said vseries of contacts being movable relatively to eachother in a plane so that the contact finger passes over said contacts ina definite path and engages them successively in passing, some of saidcontacts projecting sidewise from said plane in one direction only andsome in the other direction only, and a I .ir of connecting' devicesmovable into engagement with varying numbers of the contacts whichproject on the two sides of' said plane respectiveiy.

f. in combination, a disk of insulating material having acircumferential groove. a

contact finger movable relatively' to said disk I ments located on thetwo sides of the disks` and movable into engagement with varying numbersof the two setsof contact fingers respectively. and an electro-magnetcontrolling the relative movement between said contact finger and saiddisk to permit a partial rotation between the two when the magnet isenergized and the remainder of the rotation between the two when themagnet is deenergized. said finger engaging the contacts of said twosets only during one of said parts of said relative rotation.

24. ln combination. a disk of insulating 'material having acircumferential groove. a

contact finger movable relatively to said disk and traveling in saidgroove. a series of contact fingers projected into said groove from oneside of said disk. a second series of contact fingers rojecting intosaid groove from the other si e of said disk, and two contact segmentslocated on the two sides of the disks and movable into engagement withvarying numbers of the two sets of contact fingers respectively.

25.' In combination, a disk of insulating material having acircumferential groove, a contact finger movable relatively to said diskand traveling in said groove, a series of contact ngers projected intosaid groove from one side of said disk. a second Series of contactfingers projecting into said groove from the other side of said disk,two contact segments located on the two sides of the disks and movableinto engagement with varying numbers of the two sets of contact fingersrespectively, and an electro-magnet controlling the relative movementbetween said contact finger and said disk to permit a partial rotationbetween the two when the magnet is energized and the remainder ot' therotation between the two when the magnet is deenergized.

` 26. ln combination, a subscribers tele phone of a common batterytelephone s vstem. and a signaling apparatus associated with saidsubscriber-s telephone for producing a code signal. said signalingapparatus comprising a series of contacts, a contact finger movablerelatively to said contacts to engage them in succession, and meanscontrolled by the cessation of an incoming calling current to saidsubscribers telephone to cause relative movement between said finger andsaid contacts to produce a making and breaking of the circuit for thecommon battery current supplied to said telephone.

dll'

arcanes El. ln combination, a subscriberls teleplione of a commonbattery telephone system,'and a signaling apparatusassociated with saidsubscribers telephone for produc,- ing a code signal, said signalingrapparatus comprising a series of contacts, a contact nger, means formoving said contact finger and said series of contacts relatively tocach other so that the finger engages said contacts in succession, anelectro-magnet connected to be energized b an incoming calling currenttosaid telep one, and means controlled by said magnet for causing aninitial preparatory movement between said series of contacts and saidnger'by said moving means upon the starting of said incoming callingcurrent and for causing a current making and breaking movement betweensaid series of contacts and said contact finger upon the cessation ofsaid calling current to produce tbe desired code signal by a series ofmakes and breaks of the circuit for the common battery current suppliedto said telephone.

28. ln combination. a subscribers telephone of a common batterytelephone systern, and a signaling apparatus associated rvitli saidsubscribers telephone for predileing a code signal, said signalingapparatus comprising a series et contacts, a contact bnger, means formoving said contact nger and said series ot contacts relatively to eachotlier so that tbe linger engages said contacts in succession, anelectromagnet connected be errergiaed by an incoming callingr currentvto said telepbone, and means controlled by magnet :lor causing acurrent maltand breaking movement betvveen said series et contacts upontbe cessation ot said calling current to produce tbe desired code signalby a series et malien and brealts et' tbe circuit tor tbe common batterycurrent supplied to said telephone.

2b. lin combination, a subscribers telepbone et a common batterytelephone system, and a signalingr apparatus associated n'itli saidsubscriber-ls telepbone tor producing a code signal, said signalingapparatus comprising a series ot" contacts, a contact linger, saidcontact anger and said series ot' contacts being relatively movable setliat tbc contact Enger may engage tbe series et contacts in succession,an electro-magnet connected to be energized' by an incoming callingcurrent to said teleplione, and means controlled by said magnet torcausing an initialv preparatory movement between said series of contactsand said linger upon tbe starting et said incoming calling current andtor causin a current making and breaking movement between said series etcontacts and said contact linger upon tbe cessation et said callincurrent to produce the desired code signal y a series of makes and saidcontact iinger and breaks ot" tbe circuit tor tbe common battery currentsupplied to said telephone. A30. ln combination, a subscribers telephoneof a common battery telephone system, and a Signaling apparatusassociated with said subscriber-s telephone for producing a code signal,said signaling apparatus comprising a series of contacts. a contactfinger, said contact finger and said sci-ies o contactsbeing relativelymovable so that the contact finger may engage the series of contacts insuccession, an electro-muguet counec't'ed to be energized by an incomingcall.

.ing current to said telephone, and means controlled by said magnet forcausing a current makinglr and breaking ,movement be tween said seriesof contacts and said contact finger upon the cessation of said callingcurrent to produce the desired code sigh nal by a series of makes andbreaks of thc circuit for the common battery current supplied to saidtelephone.

31. ln combination, a subscribel"s telephone of a common batterytelephone system, and a signaling apparatus associated with saidsubscribers telephone for producing a code signal, said signalinprapparatus comprising a circuit making and breaking device connected tothe circuit for the con mon batter current supplied to said telepbone,an electro magnetic means controlled by an incoming calling current tosaid telephone to cause said circuit making and breaking device tooperate to produce a predetermined series et maken and brealta ot tbecommon battery current upon tbe cessation ot said incoming callingcurrent,

lin automatic telepbone signaling ap paratus ier producing a codesignal, comM prising a device tor automatically making and breaking tbecircuit, and meanacontrolling said device and controlled by an incomingcalling current to tbe associated teleplione and baring diilerentpositions ivliicli it respectively assumes wlien said. calling currentdoes and does not llovv and trom a lnrality ot' ivbicb it must be movedin ordcr to produce a complete cycle et operation ot said devi.

33. in automatic telephone signaling ripparatus tor producing a codesignal, coui-A prising two relatively movable members which morerelatively to eacb other in a complete cycle, and means controlling suchrelative movement and controlled `by an incoming callling current andlbaring different positions ivbicli it respectively assumes when suchcurrent does and does not flow and from a plurality of. which it must bemoved to produce a complete cycle of relative movement between sucli twomembers.

let. du automatic telephone signaling up paratus tor producing a. codesignal, coinprising a series el contacts, a contact linger movable oversaid contacts in cyclic succeslltlltlt iwi litt

sion, means for varying the effective arrangement'of said contacts, andelectrically operated means controlling themovcment of said contactlinger over said contacts and having two positions which it respectivelyassumes when an incomin calling current does and does not flow, an awaykfroin'lcoth of which positions it must be moved in succession in. orderto produce a complete cycle of movement. a f f 35. An automatictelephone. signaling appai'atusifor producingl acode signal, comprisinga series ofy contacts, a5 contact nger movable over said contacts incyclic succession, and electrically operated means controlling tliemovement of said contact iinger over said contacts and having twopositions which itv respectively assumes when an incoming callingcurrent 'does and does not flow, and away from botlijofvvliich positionsit must be moved in succession in order to produce a complete cycle ofmovement.

36. ein automatic telephone signaling parat-us for producingy a codesignal, com prising a series of contacts a contact finger inovaloie oversaid contacts in cyclic succession, electro-magnet which is energizedliy an incoming calling current to the associateci telephone, and meansoperated by said magnet for controlling the movement of said contactnager over said contacts9 said means having two positions which it takesrespectively when said magnet is and is not energized and requiring tobe moved from one of the positions to the other and then back to thefirst in order to produce a complete cycle of movement of the contactfinger over the contacts. Y

37. An automatic telephone signaling apparatus for producing acodesignal, com prising a series of contacts, la contact linger movable oversaid contacts in cyclic succession, a spring Vmotor for producing saidmovement, an electro-magnet energized by an incoming calling current tothe associated telephone, and stopping means operated by said magnet forcontrolling the movement of said contact finger over said contacts bysaid spring motor., said stopping means having twopositions which ittakes respectively when said magnet is and is not energized andrequiring to loe moved troni one of the positions to the other and thenloaclt to the iirst in order to produce a complete cycle of movement or'the contact finger over the contacts.,

in Witness tvliereoi, l have hereunto set my hand and seal at SanFrancisco., California, this twentieth clay November, A, D. one thousandnine hundred and twelve.

DUDLEY D. WRlGHT. ii.. s] Witnesses:

. Nicisoiis, KATHERINE REARDoim

